/**
 * Checks for valid bb26 format, capital letters with no spaces. Throws
 * TypeError on invalid input
 * @param {input} input string containing only uppercase letters
 * @param {boolean} suppress controls if an error is thrown if not set
 *     throws error, if set to true throws no error and returns false
 * @return {boolean} returns true if valid or if suppressError is not set to true
 *     then throws error
 * @Example isValidbb26("AA") //Execution continues returns true
 * @Example isValidbb26("Aa", true) //returns false
 * @Example isValidbb26("AA", true) //returns true
 * @Example isValidbb26("AA") //Execution continues returns true
 * @Example isValidbb26("A1") //Throws TypeError
 */
export declare function checkIfValidbb26(input: string, suppress?: boolean): boolean;
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